Building a Remote MCP Server on Cloudflare (Without Auth)

@elizabethsiegle

About Building a Remote MCP Server on Cloudflare (Without Auth)

Chat w/ Cloudflare D1 Database Remote MCP Server

#mcp #cloudflare-workers #cloudflare-d1 #cloudflareworkers #cloudflare-workers-d1 #remote-mcp-server #cloudflare-mcp

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "http://localhost:8787/sse"
      ]
    }
  }
}

Tools

No tools detected

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is Building a Remote MCP Server on Cloudflare (Without Auth)?

A remote MCP server that runs on Cloudflare Workers without authentication, enabling AI clients to chat with a D1 SQL database. It is designed for developers who want to give LLMs access to their database through their AI coding IDE.

How to use Building a Remote MCP Server on Cloudflare (Without Auth)?

Deploy via the “Deploy to Workers” button or run npm create cloudflare@latest -- my-mcp-server --template=cloudflare/ai/demos/remote-mcp-authless. Then connect it to clients like Windsurf, Cursor, the Cloudflare AI Playground, or Claude Desktop using the deployed URL (e.g., remote-mcp-server-authless.<your-account>.workers.dev/sse).

Key features of Building a Remote MCP Server on Cloudflare (Without Auth)

Deployable with a single click or CLI command
Provides remote MCP access to D1 SQL databases
No authentication required for the server
Customizable tools defined in src/index.ts using this.server.tool(...)
Compatible with Windsurf, Cursor, Claude, and more clients

Use cases of Building a Remote MCP Server on Cloudflare (Without Auth)

Give an AI coding IDE direct access to query a database
Connect a remote MCP server to the Cloudflare AI Playground
Use Claude Desktop with a remote database via the mcp-remote proxy
Prototype a serverless MCP tool without managing authentication

FAQ from Building a Remote MCP Server on Cloudflare (Without Auth)

What does this MCP server allow me to do?

It lets you chat with your D1 SQL database from any MCP‑compatible client, such as Windsurf, Cursor, the Workers AI LLM Playground, or Claude.

How do I deploy it?

Click the "Deploy to Workers" button on the README page, or run npm create cloudflare@latest with the provided template.

How can I add my own tools?

Define each tool inside the init() method of src/index.ts using this.server.tool(...).

How do I connect it to Claude Desktop?

Use the mcp-remote proxy and configure Claude Desktop’s MCP servers to point to your deployed SSE endpoint (e.g., http://localhost:8787/sse).

What clients can I use with this server?

It works with the Cloudflare AI Playground, Claude Desktop, and any client that supports MCP, including Windsurf and Cursor.

Frequently asked questions

What does this MCP server allow me to do?

It lets you chat with your D1 SQL database from any MCP‑compatible client, such as Windsurf, Cursor, the Workers AI LLM Playground, or Claude.

How do I deploy it?

Click the "Deploy to Workers" button on the README page, or run `npm create cloudflare@latest` with the provided template.

How can I add my own tools?

Define each tool inside the `init()` method of `src/index.ts` using `this.server.tool(...)`.

How do I connect it to Claude Desktop?

Use the `mcp-remote` proxy and configure Claude Desktop’s MCP servers to point to your deployed SSE endpoint (e.g., `http://localhost:8787/sse`).

What clients can I use with this server?

It works with the Cloudflare AI Playground, Claude Desktop, and any client that supports MCP, including Windsurf and Cursor.

Comments

Basic information

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